918574020 has 576 divisors, whose sum is σ = 3725869056. Its totient is φ = 184757760.

The previous prime is 918574003. The next prime is 918574021. The reversal of 918574020 is 20475819.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (918574021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 13710027 + ... + 13710093.

Almost surely, 2^918574020 is an apocalyptic number.

918574020 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 918574020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1862934528).

918574020 is an abundant number, since it is smaller than the sum of its proper divisors (2807295036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

918574020 is a wasteful number, since it uses less digits than its factorization.

918574020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 918574020 is about 30307.9860762803. The cubic root of 918574020 is about 972.0860691960.

The spelling of 918574020 in words is "nine hundred eighteen million, five hundred seventy-four thousand, twenty".